BELL HELICOPTER 430 Maintenance Manual page 174

BHT-430-MM-2
5-50. LIGHTNING STRIKE (CONT)
DATA REFERENCE
BHT-430-CR&O-2
BHT-430-CR&O-2
BHT-430-CR&O-2
5-00-00
Page 144 Rev. 15 26 JAN 2007
CONDITIONAL INSPECTIONS
INSPECTION TASK DESCRIPTION
b. Examine the main rotor yokes, elastomers, bearings,
pitch links and attach hardware for signs of burns. Replace all
parts that show signs of burning or arching and all attaching
hardware.
c. Remove the transmission and mast assembly for
overhaul. Make an entry in the component record to show that
the reason for removal was a lightning strike.
d. Remove the swashplate, drive hub, idler link and drive
link for an overhaul. Make an entry in the component record to
show that the reason for removal was a lightning strike.
e. Remove the tail rotor hub for overhaul. Make an entry in
the component record to show that the reason for removal was
a lightning strike. Replace the blades if they are burned or
debonded.
f. Remove the tail rotor driveshaft bearing hangers and
the tail rotor gearbox and return them for overhaul. Make an
entry in the component record to show that the reason for
removal was a lightning strike.
g. Examine the auxiliary fins for signs of burns or that they
are debonded.
h. Examine the tailboom fitting for signs of arc burns
around the mount points of the tail rotor gearbox and vertical fin.
3. If you can not find any signs of damage:
a. Remove and disassemble the main rotor assembly.
(1) Examine the blades and yokes for signs of arc
burns.
(2) Examine the pitch change links at the swashplate
assembly connections for signs of arc burns.
(3) If indications of arc burns are present replace the
affected blade(s), yoke(s), pitch change link(s) and attaching
hardware.
INITIAL
MECH OTHER